MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 13


Intelligence 13 IOCs YARA 2 File information Comments
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SHA256 hash: 3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b
SHA3-384 hash: fe2bdf4a466dba770a85e0090bbd07e6643dbdbbefbd3e46ddfa92569e65c6e7fe1b91db8f45b159a10eafeb75297840
SHA1 hash: f6e6c6e6d1c4f041a4eff4dace3de8bfc722f3b6
MD5 hash: 1d82831f5f9e41ce1963c43824ae24cf
humanhash: asparagus-two-red-carpet
File name:1d82831f5f9e41ce1963c43824ae24cf.exe
Download: download sample
Signature Formbook
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File size:677'376 bytes
First seen:2023-01-17 14:34:57 UTC
Last seen:2023-01-17 16:35:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'746 x AgentTesla, 19'628 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Bynu0b+NoexY/PJXB9ogFhmsXG2Blek90dJT/NkVck4eqTl:By3+NNx8BxWgDmsXSKyJuuk4XTl
TLSH T16BE48C42467B87E2C4B90AB0153CA95826B15CD187ACB13EBD477DBE9CF634F10A9B13
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
207
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1d82831f5f9e41ce1963c43824ae24cf.exe
Verdict:
Suspicious activity
Analysis date:
2023-01-17 14:42:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f8ef62e5-24b3-4896-ba13-e59dacf4b64a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/353839/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.20402.25322.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Verdict:
No Threat
Threat level:
  2/10
Confidence:
75%
Tags:
packed
Link:
https://www.filescan.io/uploads/63c6b219afdaca54d438ce15/reports/85d04f59-a67e-4eed-b3ef-8ea72c90b3e8/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5c3676a9-26e5-48aa-9626-f427f33593b2
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1153249
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Deletes itself after installation
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netstat to query active network connections and open ports
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 785981 Sample: xzxhtrRdXW.exe Startdate: 17/01/2023 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 6 other signatures 2->42 8 xzxhtrRdXW.exe 3 2->8         started        process3 file4 22 C:\Users\user\AppData\...\xzxhtrRdXW.exe.log, ASCII 8->22 dropped 52 Injects a PE file into a foreign processes 8->52 12 xzxhtrRdXW.exe 8->12         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 12->54 56 Maps a DLL or memory area into another process 12->56 58 Sample uses process hollowing technique 12->58 60 Queues an APC in another process (thread injection) 12->60 15 explorer.exe 3 6 12->15 injected process8 dnsIp9 24 anamaeholistique.com 109.234.161.112, 49741, 49742, 49743 O2SWITCHFR France 15->24 26 d301.com 64.68.200.44, 49731, 49733, 49734 EDNSCA Canada 15->26 28 7 other IPs or domains 15->28 30 System process connects to network (likely due to code injection or exploit) 15->30 32 Performs DNS queries to domains with low reputation 15->32 34 Uses netstat to query active network connections and open ports 15->34 19 NETSTAT.EXE 13 15->19         started        signatures10 process11 signatures12 44 Tries to steal Mail credentials (via file / registry access) 19->44 46 Tries to harvest and steal browser information (history, passwords, etc) 19->46 48 Deletes itself after installation 19->48 50 2 other signatures 19->50
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2023-01-17 14:35:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7bzhgrpy3kmh7fh7cqjki6bsbjn3yomc5oybub43h2u4nkdcenq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/230117-rx2fqahd57/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
e3bef37eb5695425c111d5ba3fa18003df03e009f2c4a7d0f3b4c7591e213e43
MD5 hash:
3e7746ef1f1450ef929bb1ddabf2eeba
SHA1 hash:
f507ea72ba86b62cffd7f09eb49e2068e50361e4
Detections:
win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
Parent samples :
22471245b769519d4b63089e4fe8d3f2c098572cfd715ca85b581f087344b519
3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b
SH256 hash:
cefee10a99b2aa0015d547fdccec50214878b56ab59017fc4286b56fb77669a0
MD5 hash:
7294de7c4045e36ca819c5e492bca3d2
SHA1 hash:
87aa187f2ffd2016efc5ebf56081a1b845ece433
Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
SH256 hash:
9f75bfb67da98cefeb325bf89be2ebf0b235dabbe8617d9e23e117e03e4cf07e
MD5 hash:
babf1779f37d62b3f1b56622cd680ec2
SHA1 hash:
f340b46cf13975e4a083a621336d3ccf630e66f2
Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
SH256 hash:
b4b1f922e80da7b1662c4567deddadbe85b5b29a75dba9a4d49f59aac8c7c408
MD5 hash:
68a5613242917fd21ecf6fe87a57beab
SHA1 hash:
e520b9aa46d97c99749640eb2ba2417126aa4530
Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
SH256 hash:
e59b24bf75226d4fe35c595dd98ab40a8f063052b708f14606bef26b99357fad
MD5 hash:
bba34ff065ad828dd05b8ac098fcd1f6
SHA1 hash:
681db30e3e269d734ca27e3002dcbd1742e63d2c
Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
SH256 hash:
ab2f8dbc2b147528cecac6ea1a8886951c424be0b2026743b39d97f0cbabb04c
MD5 hash:
77ab42f4bbbf4565846eb8953192d71f
SHA1 hash:
3c662c756cc31867c0473716a74e777a65ced550
Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
SH256 hash:
3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b
MD5 hash:
1d82831f5f9e41ce1963c43824ae24cf
SHA1 hash:
f6e6c6e6d1c4f041a4eff4dace3de8bfc722f3b6
Link:
https://www.unpac.me/results/1dd70ca9-e5c4-4e47-b574-5957cc8efae4/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3fc3939a2fc6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

Executable exe 3fc3939a2fc6d4c3fca7f8a09523c19052dde1cc175d80d03cd9f54e3543111b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2406788/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/353839/

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